J@meson

Well this Friday will be my first night back out in almost 2 months after I blew my motor. I had a 305 LG4 in the car with a cam and mostly stock pushing about 180hp to now having a fully built 355 pushing out about 410-430hp. I scaled my car yesterday and need to know really where to go from here and how it sits right now. This is the side of chassis tech I dont quite know to well.

---------1780lb 52%
----| LF 1000 ---- RF780
----|
53%| -----46% cross --------3430lb total
----|
--------| 1650lb 48%
----| LR 810 ----- RR 840

XxXJokerXxX

How was the car when you had it out the last time? By looking at those numbers I'm going to say tight in, loose off? What are your ride heights on each corner?

J@meson

I completely forgot to add the fact this is a dirt track car... But you pretty much nailed it, it was tight in and loose out but running a underpowered motor it hooked mostly around the track. When I went from 5.50 rear gear to a 6.20 it woke the car up alot and then I was actually able to set the car in a decent slide through the corner but lost my straight away power as I was trapping 5400rpms down the straight floating valves where I should be able to spin this SBC to 6800+rpms so I know handling will be effected or improved.

Ride heights I do not have right now, car is currently strapped to the trailer for friday out in my barn. But I will get the ride heights, If I was to guess I would say the front is 3.5in from the ground and the rear is 5in. Its got a nasty rake going since I removed the 2in lowering blocks from the rear (which also improved handling) as this car was previously a Asphalt car. I also need to get the numbers from the caster, camber and toe. I want to raise it up as early in the night im plowing dirt before the track gets packed in, But dont want to change the geometry yet and risk throwing what handling it does have out the window.

J@meson

And just for fun heres some pics...

92z71

my son runs on dirt with a previous asphault car and i debated removing the lowering blocks in the rear , to see if it would improve anything, im having a problem with the engine popping, it revs great it idles great, when you put it on the track it runs great on pace laps but when you drop the hammer it starts popping and wont make it over 4000 rpm, ive checked the fuel psi, floats in carb, power valve, plugs. wires, timing, i just dont know what im missing.